Radiator cap



FIG. 1 is a perspective view of radiator cap showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the drawings represent unclaimed environmental subject matter. The unshaded surfaces immediately adjacent to broken lines are unclaimed. 

The ornamental design for radiator cap, as shown and described. 